Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
210029goodexcellent61excellent
200028goodexcellent51excellent
190027goodexcellent51excellent
180020goodexcellent41excellent
170023goodexcellent41excellent
160023goodexcellent41excellent
150023goodexcellent41excellent
140023goodexcellent41excellent
130019goodexcellent21excellent
120021goodexcellent21excellent
110018goodexcellent21excellent
100016goodexcellent21excellent
090016goodexcellent21excellent
080015goodexcellent21excellent
070017goodexcellent31excellent
060019goodexcellent31excellent
050016goodexcellent31excellent
040022goodexcellent41excellent
030027goodexcellent41excellent
020023goodexcellent41excellent
010021goodexcellent41excellent
000023goodexcellent31excellent
230023goodexcellent41excellent
220027goodexcellent41excellent